Headrests for universal folding chairs

ABSTRACT

A headrest for universal folding chairs comprises a fixed seat fixedly attachable to the top of the backrest of the folding chair and a headrest, where the headrest is located in the fixed seat by a support rod member. This utility model provides a clever and rational design, and expands the use function of folding chairs. Where, the headrest is fixedly attached to the top of the backrest of the folding chair with the help of a fixed seat, so as to provide a head support at the time of rest. Moreover, the supporting angle of the headrest is properly adjustable relative to the fixed seat, so as to achieve a more comfortable experience.

BACKGROUND OF THE INVENTION

1. Field of the Invention

This application relates to a headrest for universal folding chairs,especially to a headrest attachable to the top of the backrest of anyfolding chair to provide a heat support.

2. Background Art

Existing folding chairs include both steel and wooden folding chairsused in office areas or folding chairs for outdoor use during leisuretime, etc. Most of these only provide backrest design, without providinga head support. If the backrest design is extended, it will be bound toincrease the overall volume of the chair, and will take up the storagespace. Such a folding chair is usually used by people for a short reston certain occasions. If the chair could be provided with a headsupport, then users will enjoy a more comfortable experience. Therefore,this application provides at least one suitable design for a headrestfor simple and universal folding chairs.

SUMMARY OF THE INVENTION

This application provides a design for a headrest for universal foldingchairs with a fixed seat fixedly attachable to the top of the backrestof folding chairs.

The technical scheme in this utility model is realized as follows: aheadrest for universal folding chairs, includes a fixed seat fixedlyattachable to the top of the backrest of folding chairs and a headrest,where the headrest is located in the fixed seat by way of a support rod.

The fixed support rod member is fixed with a headrest on one end, and islocated in a shaft hole of the fixed seat on the other end through arotating shaft. The headrest can turn about the rotating shaft towardsthe inner side of the backrest of the folding chair.

The rotating shaft is a structure selected from one of a rivet, a bolt,or an elastic pin.

The shaft hole of the fixed seat is a herringbone structure. Therotating shaft of the locating support rod is slidable in theherringbone shaft hole to adjust the angle of the headrest.

In the above shaft hole of a herringbone structure, a hole is designedto have a bevel edge.

The support rod member is a eudipleural or “bilaterally symmetric”structure including two support rods, their upper ends jointly supportthe headrest, and their lower ends are respectively located in theirrespective fixed seat by a rotating shaft.

The support rod member is fixed with a headrest at one end, and runsthrough the sliding sleeve reserved in the fixed seat at the other end,and is provided with a locating mechanism in contact with the slidingsleeve. The locating mechanism is a spring lock installed on one side ofthe fixed seat.

This application teaches a clever and rational design, and expands theuse function of folding chairs. The headrest is fixedly attached to thetop of the backrest of the folding chair with the help of a fixed seat,so as to provide a head support at the time of rest. Moreover, thesupporting angle of the headrest is properly adjustable relative to thefixed seat, so as to achieve a more comfortable experience. Whennecessary, the headrest may also be easily detached to maintain theinherent flexibility of folding chairs.

BRIEF DESCRIPTIONS OF THE DRAWINGS

This utility model is further illustrated in the light of specificfigures as follows:

FIG. 1 is a 3D view of a headrest for universal folding chairs.

FIG. 2 is a 3D exploded view of a headrest for universal folding chairs.

FIG. 3 is a diagram of a round folding chair with a headrest.

FIG. 4 is a diagram of a headrest from angle II.

FIG. 5 is a diagram of a headrest from angle III.

FIG. 6 is a 3D exploded view of a headrest II for universal foldingchairs.

FIG. 7 is a 3D view of a folding chair with a headrest.

FIG. 8 is a 3D view of a folding sofa with a headrest.

Where reference numerals have been assigned as follows to the componentsof embodiments of the invention:

-   -   1—fixed seat    -   11—shaft hole    -   12—sliding sleeve    -   13—spring lock    -   2—headrest    -   3—support rod member    -   4—rotating shaft    -   41—pin head    -   5—folding chair    -   51—beam

DETAILED DESCRIPTION OF THE INVENTION Example I

As can be seen from FIGS. 1 and 2, a headrest for universal foldingchairs, comprising a fixed seat 1 and a headrest 2, where the headrest 2is located in the fixed seat 1 by a support rod member 3. Morespecifically, the support rod member 3 is fixed with a headrest 2 at oneend, and is located in a shaft hole 11 of the fixed seat 1 on the otherend through a rotating shaft 4, in order to turn around/about the shafthole 11. Furthermore, the shaft hole 11 of the fixed seat is aherringbone (such as V-shaped or Y-shaped) structure, so that therotating shaft 4 of the locating support rod 3 is slidable in theherringbone shaft hole 11 to adjust the inclined angle of the headrest2.

The rotating shaft 4 is a structure selected from one of a rivet, abolt, or an elastic pin. The rotating shaft 4 provided in this figure isan elastic pin directly inserted into the support rod member 3. The pinhead 41 runs through a hole reserved in the support rod member 3, isprotruded from the surface of the support rod member 3, and may beinserted into the shaft hole 11 of the fixed seat to form a movablelocating structure. When the pin head 41 is forced by an external forceto retract inward, the support rod member 3 can be detached from thefixed seat 1, and then the headrest 2 can be detached to maintain theinherent flexibility of the folding chair.

In order to cooperate with the rotating shaft 4, i.e. the retractionaction of the elastic pin, a hole of the herringbone shaft hole 11 maybe designed to have a bevel edge. When the elastic pin is sliding to thebevel edge, the bevel edge pressurizes the elastic pin head 41, forcingthe elastic pin to retract, so that the support rod member 3 is detachedfrom the fixed seat 1.

According to FIG. 3, FIG. 4 and FIG. 5, the folding chair 5 in thisexample is a round folding chair, lower portion of the round chair formsa cushion portion, and its high portion forms a backrest portion. Theheadrest 2 is fixedly attached to the top of the backrest of the foldingchair 5 with the help of a fixed seat 1, and is more accurately directlyfixedly attached to the beam 51 on the top of the backrest. Thecorresponding beam 51 in this example is the chair in the high portion.When the head is against the headrest 2, the support rod member 3 isexactly against the beam 51 on the top of the backrest of the foldingchair 5, so as to form stress constraints, provide a head support andkeep a comfortable rest pose. The rotating shaft 4 is in differentpositions of the herringbone shaft hole 11. The headrest 2 can beadjusted to a plurality of angles, in order to meet personalized needs;the headrest 2 may also turn around the rotating shaft 4 towards theinner side of the backrest of the folding chair, to prevent the headrest2 from protrusion, which will hinder people from passing through theback of the folding chair 5.

In this example, the support rod member 3 is a eudipleural orsymmetrical structure, including two support rods, their upper endsjointly support the headrest 2, and their lower ends are respectivelylocated in their respective fixed seat 1 by a rotating shaft 4. In thisstructure, the support rod member 3 may use a small round rod member,which is not only compact, but also has certain flexibility.

Example II

As shown with respect to FIG. 6, the headrest 2 and the support rodmember 3 may also use an integrated plastic component. The support rodmember 3 is fixed with a headrest 2 at one end, is located in a slidingsleeve 12 reserved in the fixed seat 1 on the other end, and is providedwith a locating mechanism in contact with the sliding sleeve 12. Therotating mechanism is a spring lock 13 installed on one side of thefixed seat 1, and may be detached from the fixed seat 1 by pulling theheadrest 2.

FIG. 7 is the headrest used in a simple folding chair. FIG. 8 is adiagram of the headrest used in a folding sofa. The above two foldingchairs may also use a headrest with double support rod members, or anintegrated headrest may also be applied to a round folding chairstructure in FIG. 3 in accordance with the aesthetic design.

While this invention has been described as having a preferred design, itis understood that it is capable of further modifications, uses and/oradaptations of the invention following in general the principle of theinvention and including such departures from the present disclosure ascome within the known or customary practice in the art to which theinvention pertains and as maybe applied to the central featureshereinbefore set forth, and fall within the scope of the invention andthe limits of the appended claims. It is therefore to be understood thatthe present invention is not limited to the sole embodiment describedabove, but encompasses any and all embodiments within the scope of thefollowing claims.

We claim:
 1. A headrest for universal folding chairs, comprising a fixedseat fixedly attachable to the top of the backrest of the folding chairand a headrest, where the headrest is located in the fixed seat by asupport rod member.
 2. A headrest for universal folding chairs definedin claim 1, wherein the support rod member is fixed with a headrest atone end, and is located in a shaft hole of the fixed seat on the otherend through a rotating shaft. The headrest can turn around the rotatingshaft towards the inner side of the backrest of the folding chair.
 3. Aheadrest for universal folding chairs defined in claim 2, wherein therotating shaft is a structure selected from one of a rivet, a bolt, oran elastic pin.
 4. A headrest for universal folding chairs defined inclaim 2, wherein the shaft hole of the fixed seat is a herringbonestructure. The rotating shaft of the locating support rod is slidable inthe herringbone shaft hole to adjust the angle of the headrest.
 5. Aheadrest for universal folding chairs defined in claim 3, wherein a holeof the above herringbone shaft hole is designed to have a bevel edge. 6.A headrest for universal folding chairs defined in claim 2, wherein thesupport rod member is a eudipleural structure including two supportrods, with their upper ends jointly support the headrest, and theirlower ends are respectively located in their respective fixed seat by arotating shaft.
 7. A headrest for universal folding chairs defined inclaim 1, wherein the support rod member is a eudipleural structureincluding two support rods, with their upper ends jointly support theheadrest, and their lower ends are respectively located in theirrespective fixed seat by a rotating shaft.
 8. A headrest for universalfolding chairs defined in claim 1, wherein, the support rod member isfixed with a headrest at one end, and runs through a sliding sleevereserved in the fixed seat at the other end, and is provided with alocating mechanism in contact with the sliding sleeve.
 9. A headrest foruniversal folding chairs defined in claim 8, wherein, the locatingmechanism is a spring lock installed on one side of the fixed seat.